Coffee machine



FIG. 1 is a front perspective view of a coffee machine showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines in the figures depict portions of the coffee machine that form no part of the claimed design. 

CLAIM We claim the ornamental design for a coffee machine, as shown and described. 